Illuminating device.



A SUNDH.

ILLUMINATING DEVICE.

APPLICATION FILED NOV- 13, 19M.

Patented Apr. 20, 1915 I WITNESSES Z i if HM UNITED STATES PM or AUGUSTSUEDE, 0! HASTINGS-UPON-HIIDSON, NEW YORK.

'mmmrurme nnvrqn To all whom it may concern:

Be' it known that I, AUGUST SUNDH, a citizen of the United States,residing in H-astings-upon-Hudson, in the county of Westchester andState of New York, have invented a new and useful Improvement inIlluminating Devices, of which the follow- Anot er object of theinvention is the,

provision of. an electric battery and a miniature lamp together with apush button or other device for closing a circuit between the batteryand lamp and a reflector for directing the light 'to the desired place,:the whole being contained within the knob structure and thus guardedagainst injury .from an external source.

A further object of the invention consists in providing a source ofillumination which mav be controlled at will and is contained wit in aknob, handle or analogous device, the arrangement being such that all ofthe parts are Immediately accessible for inspection, repair or relacement. Other objects 0 the invention will appear hereinafter, thenovel combinations of elements being pointed out in the appended claims.

Figure 1 is a sectional view of my invention; Fi .,2' is'a fragmentary"end view of Fig. 1; i 3 and 4 illustrate my invention applieste a safeand to a-door.

'- Similar parts are designated by like ref 'er'encecharactersthroughout all of the figures.

' It is well'known that oftentimes .oneex- I eriences the reatestdifficulty in locating a l; al-hand even in the day time eyhole afterthe same difliculty mag be'present should the key hole be locate wherethe light is feeble, as so often'is thecase. The usual we to find thekeyholewhen the light is incient1is to strike a' match if o'ne'can befound, and after locatingthe keyhole, throw Specification of LettersPatent. Application filed November 13, 1am. Serial No. 871,889.

Patented Apr. 20, 1915.

the match, Still lighted, into a corner. This practice is at bestnotonly a nuisance, but

also dangerous, since a carelessly thrown lighted match may veryeasily'be the cause of a serious fire. When it is desired to manipulatethe dial of the combination lock of a safe, if the li ht be oor it isalmost impossible to see t e num rs on the dial, and even thoughthenatural light be good or an artificial light be used, the 'placlng ofthe hand 'on the dial knob is sure'to cast a shadow on the dial, whichobviously renders it diflicult to work thecombination.

By reason of my inventionl am enabled to provide a simple, practical andefiicient means for li hting-a keyhole or the dial of a safe. Theighting devihe, being contained within the knob does not require anyadditional space, and will not'cast any shadows.

The first cost is'very moderate, and, since it s intended that the lightbe used only at mtervals as needed,

Referring to Fig. 1, the numeral 2 represents the shell or casing of theknob which maybe of any suitable material say for example, brass, and itmay be of any desired form such as cylindrical, oval or polygonal,either plain here shown, the knob casing 2 is a cylindrical castingwhich extends in a left hand direction to form a boss 3 in which issecured a. square stem or spindle 4 coactin in the usual manner with thedoor 100 ing or latching mechanism, the extension bein conical for partof its'length. Containe within this conical extension of the knob is aconical tube, 6, of glass or other transparent substance, are in partcut away as shown at 7 in Fi 2, so as to form openings through whichlight may pass.

Inside of the knob casing 2 is an electrical battery preferably of theso called dry type which ,may be constructed in any one of the wellknown'ways and as here shown comprises an outer containing cylinder 11of zinc which is insulated from the knob casing by the insulation 15.The interior of the zinc cylinder is lined with cloth, blotting paper ofother suitable absorbent material 12, and contains a block of carbon 13,the remaining space in the battery being filled izer le. a

Incl'osed within the glass tube, 6, and held or ornamental as desired.As

the expense for its mamtenance 1s ins gnificant.

and the walls of the extension between the insulation and the extensionof the knob, is a reflector of metal or any suitable material, 2-1,which forms a socket for an incandescent lamp, 8, the base of g whichabuts a contact, 16, embedded in the screw cover,'17, and push button22, and connection between the negative element or] tact 20, of thebattery, the latter contact being secured to the zinc, 11, which formsthe positive element or electrode of the battery. The contacts 22 and 20are held normally in open position as shown by the spring 23, carried bythe'cover'l7, and are brou ht into electrical contact, or rather thespring 23, is brought into electrical engagement with the contact .20,by a pressure on the button 22.

-The cover 17 is here shown as "being screwed to the knob casing 2 whicharrangement is well adapted to a cylindrical knob,

since it permits of easy removal,and whentightly screwed in place, bearsagainst the insulation 15 and thus securelyholds the battery againstdisplacement and insures a firm electrical engagement between the centerterminal of the lamp and button 16 as well as rendering the interior ofthe knob dust and moisture proof. Since the screw socket 9 is yieldableto-a certain extent, the same hots in the nature of a s ring, so asfurther to insure a good electrlcal contact between the lamp and button16, and also automatically to compensate for, an slight variation in thedimensions of different lamps or batteriesas well as to allow for anyexpansion or contraction of the various ,P t

In casethe knob be of other shape than cylindricaL-I may still retainthe screwed cover by providing the knob casingwith acircular screwthreaded flange, or if the cover be. of the same shape as the knob, sayfor example, 'uare or polygonal, the same maybe presse into lace andsecured by screws or other suit'ab e means was to rmit of the coverbeing removed w on necessary.

Fig. 3 represents a safehaving the usual combination lock 29 and showingthe embodiment of my invention as illustrated inv Fig. 1applied'thereto; Fig. 4. shows the embodiment of my inventionillustrated in Fig. 1 as bein applied to a door lock 30 so as to enabeone to light up the key hole31.-

"e An illuminating device containing an embodiment of m invention ma be:constructed at very ittle exgense an since the interior space .m the knowhich heretofore in series to accommodate a lam was wasted, is utilizedto contain the various parts the knob does not have to be made any.larger than one of standard size. The device 1s devoid of allcomplications and does not require any electric wiring, and

, since all parts are inclosed, the device may be located in a positionexposed to the weather without any danger of it becomin damaged or ofhaving its efiiciency impaire If after long use, the lamp or batteryshould become exhausted and 'need to be replaced, a the cover of theknob can be easil and ,quickly removed without the use 0 tools of any"kind and the battery and lamp may be lifted out. The batteries can bemade up in quantitiesv at small expenseand as the lamp is of standardsize and can be purchased anywhere for a few cents, the entire .cost ofmaintenance is but trifling.

If desired the batteries may be made smaller so as to permit of usingtwo or more volta e. This changecould not involve any com ications sincethe batteries would simpl e placed or nested one on top of the otlierwithin the knob.

From the foregoing description it will be seen that my. devlce comprisesa hollow door knob with an extension applied to the usual door latchspindle, said extension being prolonged and arranged for a lamp bulbwith a reflector inclosed' therein, and also a glass shield surroundingthe lamp and reflector to protect the same from the elements. The

extension of the knob isformed conically of higher with openingssurrounding it so that the light from the lam may be allowed to shineall around the kno It will also be noticed that the peculiar shape ofthe reflector will throw the light out through said openings.

As the, door knob is limited in size it has been found necessary toutilize allthe room,

'in the knob, and to this end I have provided the battery asshown in thedrawings. The batter having its contactswor terminals 1n axialalmement,'does awa with the neoess1ty of any skill in. assem ling theknob, as the battery position r l v r I desire not to: be limited to theprecise construction and arrangement of parts herein -disclosed, sinceit is obvious that one ous changes without departing from the sp1rit andscope of theinvention.

What I claim is will naturally take the proper skilled in the art couldreadily make vari 1. A hollow knob adaptedifor manual op eration,abattery in sa1d"hollow, a conical.

extension on-theknob,.an electric lamp in saidextension surrounded by a.conical glass shield,and openin s in said extension for the-light fromsaid amp to shine throu h/in alldirections circumferentially of thefinch.

2; A-hollow knob adapted :Eor manual operation, a batteryiin and hollow,an extem' 7 for the knob, an illuminating device comsion on the knob, anelectric lamp in the extension surrounded by a shield, openings in saidextension, and a reflector back of said lamp shaped to throw the lightfrom said lamp through said openings.

3. A hollow knob adapted for manual operation, a battery in said hollow,terminals in said battery in axial alinement with each other, anextension on the knob, an electric lanip in said extens on surrounded bya shield, openings in said extension for the light from the lamp toshine through circumferentially of the knob, and means carried in theend of the knob to engage one terminal of the battery.

4. A hollow knob adapted for manual operation, a battery in said hollow,rigid terminals for said battery in axial alinement with each other, anextension on said knob, an electric lamp in said extension surrounded.by a shield, and openings in said extension for the light from the lampto shine through. in all directions circumferentially of the knob.

5. A hollow knob adapted for manual operation, an extension on the knob,a cover for the knob, an illuminating device carried by the knob andextension, part of said illuminating device being carried in and whollysurrounded by said extension and part carried in and surrounded by theknob proper, a switch carried by said cover, and means associated withthe cover for controlling said switch. I

6. A hollow knob adapted for manual operation, an extension for theknob, a cover prising an incandescent lamp and a cell or dry battery,the lamp being carried by and wholly surrounded by the extension of theknob, and the cell or dry battery being carried by and wholly surroundedby the knob proper, a switch carried by said cover, and a push button insaid cover for controlling a circuit between the said battery and lamp.

7. A hollow knob adapted for manual operation, an extension formed onthe knob, an illuminating device comprising a battery and incandescentlamp, and a transparent shield surrounding the lamp, said lamp andshield being carried within said extension and said battery beingcarried within the knob proper.

8. A hollow knob adapted for manual operation, an extension formedon'the knob, an electric bulb, a battery contained within the knobproper, a glass shield surrounding the said bulb, saidbulb and shieldbeing contained within and wholly surrounded by said extension, andopenings in the periphpermit light from to pass through, and a screwcover for the knob for retaining said battery, bulb and shield in fixedrelation.

10. A hollow knob adapted for manual operation, an extension formed onthe knob, an illuminating device comprising a battery and incandescentbulb, a shield of transparent material surrounding the bulb, and areflector for the bulb, said bulb, reflector and transparent shieldbeing carried by and wholly within said extension, and the battery beingcarried by and wholly within the knob proper.

11. 'A knob adapted for manual operation, an extension formed on theknob, an illuminating device comprisin a battery and lamp, the lampbeing carried within and surrounded wholly by said extension, thebattery being carried by the knob proper, openings in said extension forpermitting the light from the lamp to pass through, a conical glassshield surrounding the .lamp and closing said openings, and a socket andreflector for the lamp formed integral and shape of a frustum of a conehaving its sides concave.

12. A knob adapted for manual operation,

a an illuminating device comprising an incandescent bulb, a reflectorcarrying said bulb, a transparent shield surrounding said bulb andreflector, an extension formed on the'knob and surrounding said lamp,reflector and shield and provided with openings through which the lightfrom the lamp may piss through, a battery carried within the ob proper,one terminal being in constant engagement with the lamp, a cover forsaid knob proper carrying a push button, a contact in engagement withsaid button and adapted to engage the other terminal of said batterywhen operated.

Intestimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

' AUGUST SUNDH.

Witnesses:

WALTER C. STRANG, ERNEST L. GALE, Jr.

